Release 198 has a bug on Windows that has double byte language set as locale (Chinese, Japanese). The product will not work properly after upgrade or installation. You are not able to open user interface and most of other functionality is missing.

I just installed this release today in a windows 7 64-bit Chinese system.

And it turns out not opening the main user interface, I could only update the components...

Also it is not working when I right-click"Scan for Viruses", so does it mean the whole software is not working? If it's like that, would I need to install a temporary software to protect my computer, or the FSP still working to protect my PC?

I just installed this release today in a windows 7 64-bit Chinese system.

And it turns out not opening the main user interface, I could only update the components...

Also it is not working when I right-click"Scan for Viruses", so does it mean the whole software is not working? If it's like that, would I need to install a temporary software to protect my computer, or the FSP still working to protect my PC?

Unless you want to workaround by making product install in some language that has single byte locale and want to change system locale, that might be a good idea. Note that this actually constitutes most languages, Ville's post has some examples on broken ones